baber/WOPTO huggingface dataset:
Patent GB-274386-A (GB)
Title: Improvements in step-grates for furnaces
IPC: F23H7/06
Filed: 1927-03-14
Abstract: 274,386. Vesuvio Feuerungsbau Ges., and Weigel, A. March 14, 1927. Grates.-In a step grate with movable steps, the latter are mounted on transverse supports which are reciprocated by means attached to their ends and arranged external to the ash-pit. As shown in Figs. 1 and 2, the transverse supports 4 for the movable steps 2 are provided with rollers 9 supported on runways 10. To the first, third and fifth supports are attached links 12 which pass through stuffing boxes 24 in the side frame 7 and are connected to bars 13<1>, 13<11>. The second, fourth and sixth supports are similarly connected to bars 15<1>, 15<11>, and links 16, 17 connected to an oscillating lever 18 and to the bars 13<1>, 13<11>, 15<1>, 15<11> serve to move adjacent movable steps in opposite directions. Air for combustion is supplied to the ash-pit from ducts 23 and through the side members 5. In a modification the supports 4 project through slots in the side frames carrying external runways and the operating rods are secured to the supports externally to the ashpit. The slots through which the supports pass are sealed by shields pressed against the slots by the air pressure in the ashpit or by springs. The side supports 7 may be made in sections, the end sections being applicable to all sizes of grate while the middle sections may be varied in length to suit the size of the grate.
Patent GB-813056-A (GB)
Title: Improvements in or relating to small arms
Inventor: PERRY CLAUDE ALFRED
IPC: F41B11/00
Filed: 1956-03-07
Abstract: 813,056. Trigger mechanism. BIRMINGHAM SMALL ARMS CO. Ltd. March 7, 1957 [March 7, 1956], No. 709.6/56. Class 119 A trigger mechanism for an air rifle incorporating a spring-loaded piston that can be cocked and released comprises a sear 11 and a pawl 23 pivoted for independent movement on a carrier plate 13 which is pivoted to the breech body of the firearm; the sear being capable of independent movement relative to the carrier plate only when not engaged by the pawl. The pawl engages the sear to lock it in its holding position and the pivotal points 17, 25 and 15 of the plate, pawl and sear are so disposed that on release of the sear by the pawl the former is moved out of engagement with the piston vent 9 by the urge of the piston spring 5. Springs 39 and 33 are provided for the sear and the pawl respectively and the effect of the spring 33 on the pawl can be adjusted by turning a screw 37. A trigger 29 has an oversize hole 26a working on a pivot 26 on the pawl and can be adjusted angularly or locked by a screw 41. The plate pivot 17 lies within a line prolonging the inner periphery of the piston tube 1 whilst the sear pivot 15 is lateral to the tube.
Patent GB-398228-A (GB)
Title: Improvements in or relating to television
IPC: H04N5/04
Filed: 1932-03-09
Abstract: 398,228. Television. ELECTRIC & MUSICAL INDUSTRIES, Ltd., Blyth Road, Hayes, Middlesex, and BROWNE, C. O., 258, Monk's Drive, West Acton, London. March 9, 1932, No. 7109. [Class 40 (iii).] In changing over from the scanning of one kinema film 5 to the scanning of a succeeding film 6 by a common mirror drum 4, the moving parts 33 necessary for the transmission of the film 6 are started before the scanning of the film 5 ceases, and, during the change-over, synchronizing signals are transmitted, which keep the receiving screen illuminated at constant intensity during the interval between the two films. Light from the inoperative kinema projector 2, 3 is prevented from falling on the mirror drum by a shutter 9, 10. The mirrors 7 translates an image of the film over apertures 16, 17, 18, from which light is reflected to a common photo-electric cell 22 by prisms 19, 20, 21, 36. Line synchronizing signals are produced by the movement of the image of an illuminated slit 25 over apertures (not shown), behind which are prisms 26, 27, 28 reflecting light to a cell 29. Framing synchronizing signals are produced by an auxiliary rotating mirror 30 which throws an image of a second illuminated slit (not shown) on an aperture, behind which lies a prism 31. The projectors are driven from the scanning- drum through clutches 11, 12, which are operated from a single control. Alternatively, the projectors are driven independently of the scanning-drum.
Patent GB-1528981-A (GB)
Title: Deflection system such as for television receivers including a switched mode vertical(field)reflection circuit
IPC: H03K4/83
Filed: 1975-02-20
Abstract: 1528981 Semi-conductor field timebase circuits; correcting pincushion distortion RCA CORPORATION 28 Oct 1975 [20 Feb 1975] 7161/75 Headings H3T and H4T In a cathode-ray tube deflection system, energy at the line scanning rate from the line scanning circuit is coupled into the field deflection winding and varied in amplitude so as to provide the field sawtooth current. As shown in Fig. 3, capacitors 43, 48 are charged via a height control 44 and repetitively discharged via transistor 40 controlled by field pulses 21. This provides field frequency sawtooth waveforms 69, 70 at the outputs of amplifiers 47, 66. Transistors 105, 107 form a Miller integrator, which provides line frequency sawtooth voltages at the emitter of transistor 112, under control of line flyback pulses from winding 8e of the line transformer 8. The line and field frequency sawteeth are compared by pulse width modulators 73, 81, the former providing pulses 123 at line frequency but of decreasing width, during the first half of each field sweep; the latter (81) provides complementary pulses 124. Each pulse 123, 124 turns on the respective SCR 13, 17 which allows a pulse of current to be fed from windings 8b, 8c of the line transformer 8 via inductors 14 or 16 to capacitor 15; the resonant frequency being less than the line frequency so that the SCRs 13, 17 are tuned off within a line period. The resulting sawtooth voltage across capacitor 15 provides the field deflection current in deflection coils 18, at the end of each field sweep, pulses are re-applied to SCR 13 and the field re-trace occurs as a resonant return occupying 3-4 lines. AC feedback from resistor 19 via capacitor 114 controls height and linearity, adjustable at 51. DC feedback via resistor 115 controls the operating point and allows centring to be adjusted at 53. Modulators 73, 81 also allow some pincushion connection by "bowtie" modulation. The pulse-width modulation may be replaced by pulse-position modulation (Figs. 1 and 2, not shown). In Fig. 5 (not shown) a synchronized sawtooth oscillator provides the field-frequency sawtooth for modulators 73, 81.
Patent GB-109760-A (GB)
Title: Clean out for Syphon Bowls.
Inventor: REICHERT JACOB L
IPC: E03D11/13
Filed: 1917-05-18
Abstract: 109,760. Reichert, J. L. May 18, 1917. Closet basins.-A means for cleaning out the bowl of a sanitary closet comprises an opening 7 in the front wall of the bowl 5 closed by a plug 14 screwing into a sleeve 9 fitting in the opening 7. The sleeve 9 has lugs 10 engaging corresponding slots in the wall, and is held in place by a ring 17 screwing on the outside of the sleeve and bearing on washers 19 in a recess 20. A rib 15 on the plug 14 enables the latter to be removed, and a covering cap 21 screws on the sleeve 9 as shown.
Patent GB-384975-A (GB)
Title: Improvements in or relating to devices for setting the knitting needles of knitting machines in the operative position
IPC: D04B11/20
Filed: 1931-03-07
Abstract: 384,975. Parallel knitting-machines. CESKA ZBROJOVKA AKCIOVA SPOLECNOST V. PRAZE, 31, VßclavskÚ nam, Prague. March 7, 1931, No. 7190. Convention date, Aug. 16, 1930. Void [Published under Sect. 91 of the Acts]. [Class 74 (ii).] Patterned work is obtained by the use of two notched slide-bars 3, 4 raised alternately into a position at which they put the corresponding needles into action by a transversely movable slide 13 with slots 17, 18 in which work pins 14. The upper parts 7 of the plates 3, 4 can be turned down on pivots 6 out of range of the needles. The slide 13 may be displaced irregular amounts by means of a handle 5.
Patent GB-103414-A (GB)
Title: Improvements in or relating to Combined Feed-water Heating and Circulating Arrangements for Steam Boilers.
Inventor: JENKINS DAVID JOHN
IPC: F22D7/00
Filed: 1916-05-19
Abstract: 103,414. Jenkins, D. J. May 19, 1916. Water-circulation, apparatus for promoting.- A feed-water heater and circulator for a boiler comprises a mixing-vessel H, means to pump feed-water into such vessel intermittently, a hotwater supply pipe L fitted with an air chamber D delivering water from the lower part of the boiler through a non-return valve F to the vessel H, and a pipe J for discharging water from the vessel to the boiler.
Patent GB-1129970-A (GB)
Title: Improved f.m. variable delay
IPC: H03H17/00
Filed: 1966-02-18
Abstract: 1,129,970. Automatic phase control systems; delay circuits. STANDARD TELEPHONES & CABLES Ltd. 18 Feb., 1966 [23 Feb., 1965], No. 7236/66. Addition to 1,105,432. Headings H3A and H4R. Signals to be passed through the variable delay system described in Specification 1,105,432 are used to frequency modulate a carrier, the frequency modulated carrier being applied on lines 401 and 402, Fig. 3, to the delay system 3 which is controlled by a logic and binary counter circuit means as in Specification 1,105,432. The outputs of the delay system are a primary and an auxiliary signal, differing in delay times by the minimum incremental delay, and these may be combined in a sum amplifier 420 after passing through respective variable level limiters 412 and 415 and amplitude-sensitive FM discriminators 413 and 414. The levels of the limiters 412 and 415 are controlled in a complementary manner by a signal from the logic circuit on line 440 via a level control unit 430; linearity of control is provided by means of negative feedback from the level detectors 441 and 442 to the control unit 430.
Patent GB-926407-A (GB)
Title: Improvements relating to open mesh structural units for industrial flooring or other urposes
IPC: B21D47/00
Filed: 1962-02-24
Abstract: 926,407. Open-mesh metal flooring; gratings. R. BARR. Feb. 24, 1962, No. 7296/62. Classes 20 (4) and 107. [Also in Group XXII] A structural element for open-mesh industrial flooring consists of two sets of bars, one set of longitudinal bars 10 being formed with slots 11 on their upper edges which are narrower at the top and the other set of transverse bars 20 being shaped to be insertable into the slots but being initially of greater depth so that when pressed home their greater depth is forced out to fill up the wider part in the slots and thereby secure the whole together in a permanent manner. The transverse bars 20 have parallel sided slots 21 cut in their lower edges. The longitudinal bars are stronger than the transverse bars. The bars are assembled, as shown in Fig. 4, and the assembly is placed in a press and the transverse bars are forced downwardly so that their excess height at the points of intersection is absorbed by distortion as the material of the bar flows into the dove-tailed portion of the slots 11. The margins of the structure are formed by longitudinal bars 30 and transverse bars 40 similarly jointed to the bars 10 and 20. The bottom of each dove-tailed slot is above the neutral axis of the longitudinal bars giving full sectional strength and the bottom edge of each transverse bar is below the neutral axis of the longitudinal bars which act as struts giving lateral strength and rigidity in a lattice girder effect.
Patent GB-136984-A (GB)
Title: Improvements in Protected Metal Sheets for use as Building Material or for other purposes.
Inventor: MILLER THOMAS DENTON
IPC: E04B1/64
Filed: 1919-03-24
Abstract: 136,984. Miller, T. D. March 24, 1919. Roofing; walls. -Protective coverings for metal sheets, suitable for use as shingles, wall sidings, roofing, &c., are made and applied in one piece by being extended around one end and entirely covering the said end, the opposite surfaces, and side edges of the metal sheet. The covering 5, which is preferably asbestos, is cut as shown in Fig. 7, and folded about the metal sheet on the line 4<a>, the marginal parts 5a, 6a being folded over the respective edges. In another form, the blank may have the marginal parts on one and the same half. Asphalt is applied to the metal sheet before applying the covering, and, during the rolling in applying the covering, the asphalt is pressed out and extends over the marginal parts before these are pressed into position.
Patent GB-1515951-A (GB)
Title: Methods of cold-bonding metal parts
IPC: H05B3/42
Filed: 1976-02-25
Abstract: 1515951 Frying pans ELPAG AG CHUR 25 Feb 1976 [25 Feb 1975 7 July 1975] 07486/76 Heading A4A [Also in Divisions B3 and F4] In a method of cold bonding a pair of metal parts, one of the parts or an insert 1 has holes 2, 3, 35 punched in it so that the edges of the holes protrude from the plane of the insert, the parts are pressed together or on to the insert so that the protruding rims penetrate into the surface of one or the surfaces of both parts, the metal of the part or parts flowing into the holes. The insert 1 is made from stainless steel and the holes 2, 3 are punched from opposite sides. The insert is placed between two metal sheets (4), (5), Fig. 3 (not shown), which may be of different metals, or the insert may be used to secure a tubular heating element (11) to an aluminium plate (12), Fig. 7 (not shown). To make a frying pan, holes are formed in a stainless steel base 6, Fig. 5, which is pressed into a plate 9 of aluminium or copper, the material of the plate forming rivet head shaped protrusions in the holes. A water heater is made from an Al-Mg-Si alloy pipe 31, Fig. 18, having an integral longitudinal rib 32 formed with holes 35. A magnesium oxide filled tubular heating member 37 is bent to the shape of the pipe 31 and protruding rims 36 of the holes 35 into the aluminium casing of the member 37 as far as the filling. This allows for the escape of moisture in the filling during annealing and to prevent reabsorption of moisture silicone oil is mixed with the magnesium oxide. A thermostat is mounted on a bridge 38 fitted near the pipe ends and the pipe is indented, e.g. at 41, 42, to form steam spaces to allow for uniform water flow. A bi-metallic coil 43 inside the pipe expands and contracts with water temperature variation to prevent lime deposits forming on the tube walls.
Patent GB-657818-A (GB)
Title: Austenitic steels of high nickel, chromium and cobalt content and method for the heat treatment thereof
IPC: C22C19/05
Filed: 1948-03-12
Abstract: Austenitic steel for use at high temperatures consisting of C = 0.15 per cent; Si and Mn, up to 2 per cent each; Ni, 25-40 per cent; Cr, 20.1-25 per cent; Co, 18-30 per cent; Ti, up to 1.2 per cent and either W, 2 to 6 per cent; or Mo. 1-6 per cent, or both with a total content 2-10 per cent; the balance being iron and unavoidable impurities, is softened by cooling from 800-1300 DEG C. and then reheated one or more times at 400-900 DEG C. for 2-10 hours to produce precipitation hardening.  The alloy may also contain 0.2 per cent B, and a maximum of 4 per cent Al.  The cooling may be stopped at a temperature above that of the medium but sufficiently low to maintain the hardening elements in solution. A forged, rolled, or cast part may be subjected to the reheating step only.  The reheating may be carried out in steps to produce precipitation of the hardening elements in successive stages.  The treatment may be combined with mechanical working. Specifications 371,334, 404,876, and 583,845, are referred to.  The Specification as open to inspection under Sect. 91 includes also alloys having the composition C \sE 0.15 per cent; Si and Mn, up to 2.0 per cent each; Ni, 25-40 per cent; Cr, 9-25 per cent; Co, 18-30 per cent; Ti, up to 5 per cent; the balance being iron and unavoidable impurities.  This subject-matter does not appear in the Specification as accepted.
Patent GB-836791-A (GB)
Title: Improvements in and relating to gas volume control mechanism
Inventor: CHARLES JOHN ARTHUR
IPC: G01F15/00
Filed: 1956-03-12
Abstract: 836,791. Gas meters. UNITED GAS INDUSTRIES Ltd. June 12, 1957 [March 12, 1956], No. 7669/56. Class 54. A dry gas meter can be set to deliver a predetermined volume of gas by mechanism which is similar to prepayment mechanism and comprises a single quantity wheel 12 engaged by a pawl with a domed part 60 of an operating shaft 28 for setting it forward, differential quantity mechanism 10, 11, 14 geared to a measuring-out worm 15 driven by the metering spindle of the meter and a pawl 40 which engages a ratchet-wheel 36 to prevent return of the shaft 28 to its initial position under the action of a spring 35 until, just before the predetermined volume has been delivered and a control cam 20 is about to close the meter inlet or outlet valve, the pawl 40 is disengaged under control of the cam 20. The pawl 40 is mounted directly on, or operated by, a spindle 41 carrying a two-part lever 42, 45 in which the part 45 is adjustable relative to the part 42 by an eccentric bolt 46 and carries a projection lying in the path of a dog 44 on the control cam. The forward setting movement of the spindle 28 is limited by a pin 37 on the ratchet-wheel 36 engaging a fixed stop 38 and its initial position by a pin 33 on a setting disc 31 engaging a radial arm 34 on the spindle. The disc 31, which bears a graduated scale, can be angularly adjusted to vary the position of its stop-pin so that the quantity to be delivered can be varied and can be locked in position by a fixed pin engaging between tooth spaces 47 in its periphery. A pinion 21, in fixed relation with the driving member 17 of a Geneva mechanism connected to the control cam 20, drives a gear 22 and a drum indicator 24 showing the amount of gas available or consumed.
Patent GB-692985-A (GB)
Title: Improvements in or relating to x-ray apparatus
IPC: H01J31/50
Filed: 1952-03-26
Abstract: 692,985. X-ray apparatus. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. March 26, 1952 [April 14, 1951], No. 7732/52. Class 98 (i). [Also in Group XL (b)] Apparatus in which an electron beam produces on a luminescent output screen of an image intensifier a replica of an image produced by X-rays on an input screen, is characterized by means for impressing an intermittent control voltage on a control element of the image intensifier so as to produce and suppress alternately the image on the output screen electrically to provide intermittent exposures for a photographic sheet moving through the plane in which an image of the output screen is formed by a lens. As shown, an image intensifier 3 (e.g. of the kind described in Specification 680,404, [Group XL (a)], has at one end a screen 11 containing luminescent material such as zinc sulphide, on which an X-ray image is formed. The image causes electrons to be emitted from a closely adjacent layer of antimony activated with caesium, and the electrons are focused as by cylindrical electrodes 12, 13, 14, 15 on a screen 4 of luminescent material covered with a thin layer of aluminium. Screen 11 is at earth potential, and the coating of screen 4, and the electrodes 12, 13, 14, 15 are connected to a potential divider 16. The image on screen 4 is projected by a lens 5 on to a film 28 driven by sprockets 26, 27. Driving means 25 move film 28 either continuously or intermittently, and also actuate a pulse generator 24 which produces a pulse whenever a fresh area of film is fed to the film gate. This pulse operates a square-wave generator 23, the output from which is passed to a pulse transformer 17, which produces a positive-going pulse which is applied to the coating of screen 4 and to the electrodes of the intensifier. As long as the pulse lasts a properly focused image appears on screen 4 and is projected on to the film 28, but when the pulse ends the image is defocused or blacked out. Alternatively, electrode 12 only, or a control grid replacing it, may be held at such a negative potential that no electrons reach the screen 4, and the negative bias is raised to a positive potential by the pulse generator when the image is to be photographed. In a modification, where the images are produced at high speed, the film has marginal perforations and runs continuously. A narrow light beam is directed through the perforations on to a photoelectric cell, and the pulses so produced are fed to the square-wave generator 23. The image on screen 11 may be formed by penetrative radiation other than X-rays, e.g. by a beam of neutrons or like particles.
Patent GB-733718-A (GB)
Title: Improvements relating to windings for magnetic structures
Inventor: FENEMORE ALAN STEPHEN
IPC: H02K3/48
Filed: 1953-03-20
Abstract: 733,718. Conductors for dynamo-electric machines. ENGLISH ELECTRIC CO., Ltd. March 19, 1954 [March 20, 1953], No. 7758/53. Class 35. Bare conductors spaced fron the slot sides are also spacec from the top and bottom of the slot by spacers of refractory in sulating material, the conduc tors and spacers being of such cross-section that they interlock to prevent sideways move. ment of the conductors. As shown, the two conductors in the slot may consist of lamina 12, 13 which may be bare or insulated with thin mica or aluminium foil with an oxidized coating on each face. The wedges 14, 15, 16 of which 14, 16 may have recesses to receive springs 17, 19 may be zircon porcelain, alumina porcelain, silica or sintered alumina. The slot sides may have insulating linings. Interlocking crosssections other than chevron may be used for the conductor laminµ and adjacent laminµ may have projections on opposite sides alternately to increase the surface exposed to the cooling gas.
Patent GB-559989-A (GB)
Title: Process for the conversion of hydrocarbons
IPC: B01J21/00
Filed: 1940-04-30
Abstract: 559,989. Cracking oils; cyclic and a cyclic hydrocarbons. UNIVERSAL OIL PRODUCTS CO, April 30, 1940, No. 7769. Convention date, June 30, 1939. [Class 32] [Also in Group IV] Gasoline of a saturated nature is obtained by the catalytic conversion of hydrocarbon oils in presence of catalysts comprising calcined mixtures of precipitated hydrated oxides of silicon, alumina and zirconium freed from alkali under the following conditions (a) temperature- 260-482‹C., (b) pressures from atmospheric to 70 atmospheres, (c) liquid space velocities of 0.5 to 5, (d) regeneration of catalyst after contact with a quantity of feed oil equivalent to not more than 1.5 liquid volumes of oil per volume catalyst, these conditions being correlated so that the fraction of end boiling point 204‹C. produced has a bromine number of less than 35. Specifications 523,252 and 525,981 are referred to. The Specification as open to inspection under Sect. 91 comprises also reforming and desulphurization of various hydrocarbons under the same conditions. This subject-matter does not appear in the Specification as accepted,
Patent GB-855265-A (GB)
Title: Plastics sunbathing pouch
IPC: A45C3/10
Filed: 1959-03-06
Abstract: 855,265. Bags for sunbathing. TINKLER, J. March 6, 1959, No. 7786/59. Class 133. A transparent plastics bag A having a plastics foam lining C on the inner surface of its underside is large enough to envelope a human body up to the neckline beyond which point there is an extension on the underside for use as a pillow : it can be opened and closed by means of a zip fastener B in its top. Ventilation holes may be provided.